Cargo-Bot is being called the "first game programmed entirely on the iPad using Codea."
Codea has been called the "GarageBand of coding." The $10 app lets you create games and simulations right on your iPad, and the creators have decided to prove that it works by releasing Cargo-Bot for free in the Apple App Store.
Cargo-Bot is not only an advertisement, but it proves that the iPad is more than an expensive Facebook machine by showing that it's capable of creating decent content. However, showing that your code editor works by using it yourself isn't really reassuring. Especially when you are trying to convince people to drop $10 on an app. At least iPad users get a free puzzle game out of the developer's attempt to prove that their pay app is a worthy investment.